4.37'' Rollerball Pen Refills, Roller Ball Fine Point 0.5mm, German Ink Refill Pack of Replaceable Refills Medium Point(6 Pack) (blue)

Size: The length of the refill is about 4.37 inches / 11.1 cm, The diameter of the ink resevoir is 0.24 inch / 0.6 cm，the midpoint of 0.5 mm German gel ink. Fits Parker Compatible Rollerball pens and Waterman Compatible Rollerball Pen. Before buying, please double check whether the specifications are suitable for your pen. Quantity:6 rollerball refits, enough for you to share with your friends.【Please note that this product is not suitable for CROSS and Mont Blanc pens】 Quality: metal material, light and smooth; Ink drying quickly, ink flow consistent, will not ooze. Suitable for site: metal rollerball refits are suitable for office, business, school and home. Scope of application: Many replaceable rollerball pens are compatible and can extend the life of your favorite expensive pen.